Billing matter

When I call I'm numerous times speaking to 3 different agents regarding upgrading from extra package to premium package I was told 3 different amounts to pay in for 5 days worth of upgrade. How is it possible to pay for 5 days R180 and why is it that the amount is always different depending on the agent you get. When ask how they get the amount, my call is either dropped or they refuse 2 answer the question. As this is not the 1st time upgrading for only a couple of days, I never pay R180. I would honestly like to know how dstv bills a client. The previous month I upgraded for the same amount of days and paid nothing more then R60. Requesting Afrikaans speaking consultant is also a crime in the call centre as that is even not allowed. Talk about a country with choice!